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| author | Alexey Kodanev | 2017-10-06 18:02:35 +0200 |
|---|---|---|
| committer | David S. Miller | 2017-10-08 19:12:15 +0200 |
| commit | 3d0241d57c7b25bb75ac9d7a62753642264fdbce (patch) | |
| tree | 536ca01291bd131be75fed6742557d1885774622 /net/ipv4/gre_offload.c | |
| parent | mlxsw: spectrum_router: Avoid expensive lookup during route removal (diff) | |
| download | kernel-qcow2-linux-3d0241d57c7b25bb75ac9d7a62753642264fdbce.tar.gz kernel-qcow2-linux-3d0241d57c7b25bb75ac9d7a62753642264fdbce.tar.xz kernel-qcow2-linux-3d0241d57c7b25bb75ac9d7a62753642264fdbce.zip | |
gso: fix payload length when gso_size is zero
When gso_size reset to zero for the tail segment in skb_segment(), later
in ipv6_gso_segment(), __skb_udp_tunnel_segment() and gre_gso_segment()
we will get incorrect results (payload length, pcsum) for that segment.
inet_gso_segment() already has a check for gso_size before calculating
payload.
The issue was found with LTP vxlan & gre tests over ixgbe NIC.
Fixes: 07b26c9454a2 ("gso: Support partial splitting at the frag_list pointer")
Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com>
Acked-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/gre_offload.c')
| -rw-r--r-- | net/ipv4/gre_offload.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/gre_offload.c b/net/ipv4/gre_offload.c index 416bb304a281..1859c473b21a 100644 --- a/net/ipv4/gre_offload.c +++ b/net/ipv4/gre_offload.c @@ -86,7 +86,7 @@ static struct sk_buff *gre_gso_segment(struct sk_buff *skb, greh = (struct gre_base_hdr *)skb_transport_header(skb); pcsum = (__sum16 *)(greh + 1); - if (gso_partial) { + if (gso_partial && skb_is_gso(skb)) { unsigned int partial_adj; /* Adjust checksum to account for the fact that |